补丁1调节了子在主要毛细胞的信号传递
Rajat Rohatgi1, Ljiljana Milenkovic, Matthew P Scott
1Departments of Developmental Biology, Genetics, and Bioengineering and Howard Hughes Medical Institute, Stanford University School of Medicine, Stanford, CA 94305, USA.
概括
主要的乳毛是对刺信号发送至关重要的. 它们调节了Sonic Hedgehog受体Patched1,控制了哺乳动物中的Smoothened积累和信号激活.
科学领域:
- 细胞生物学 细胞生物学
- 发展生物学 发展生物学
- 分子生物学分子生物学
背景情况:
- 初级乳毛是关键的细胞器官.
- 它们在信号传导途径中发挥着至关重要的作用,包括 (Hh) 途径.
- Hh信号的失调与各种发育障碍和癌症有关.
研究的目的:
- 调查一次性眼在调节Sonic Hedgehog (Shh) 的受体Patched1 (Ptc1) 的作用.
- 阐明初级毛控制平滑 (Smo) 定位和Hh通路激活的机制.
主要方法:
- 免疫光显微镜可视化蛋白质定位在初级毛内.
- 生物化学测试用于研究蛋白质-蛋白质相互作用和信号事件.
- 基因操纵以改变乳毛功能和Hh通路组件.
主要成果:
- 补丁1 (Ptc1) 局部化到主要的眼.
- 眼中的Ptc1通过防止其积累来抑制Smo.
- 索尼克 (Shh) 结合导致Ptc1退出乳毛,允许Smo积累和通路激活.
结论:
- 主要的眼作为一个平台来感知Shh.
- 皮介导的Ptc1和Smo的调节对于Hh信号传导至关重要.
- 这种机制对哺乳动物的发育,致癌和干细胞生物学至关重要.
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